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期 刊 ：植物保护学报 1997年

关键词：弗氏虫霉；棉蚜；体表微生物；

Keywords:Entomophthora fresenii, cotton aphid, superficial microbes,

摘 要 ：对棉蚜体表微生物[芽枝霉(Cladosporium sp.),细菌—8(Bacillus—8)]和弗氏虫霉之间关系的研究结果表明:棉蚜体表微生物对弗氏虫霉[Entomophthora fresenii (Nowak) Gustafs,简称Ef]的孢子萌发、孢子形态变化、侵染力有很大影响。用体表微生物培养液浸Ef孢子能显著提高其萌发率。在Ef菌培养过程中加入体表微生物能产生相似于天然大孢子。将体表微生物和Ef菌剂混合用于田间防蚜,增效作用达29.2％～53.6％。所以笔者认为Ef和棉蚜体表微生物之间有密切的协生关系。

Abstract:The relationships between germination and infection of Entomophthora fre-senit (Ef) ,one of the important pathogenic fungi found commonly on cotton aphid Aphis gossypii Glover in Shaanxi Province, and some superficial microbes (SM) such as a species of Cl

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